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我想從sqlite檢索數據。用戶可以有超過1個分數,我想要顯示它。它可以顯示用戶是否只有一個分數,但是如果用戶有多個分數,它會顯示空白屏幕。從包含多個數據的數據庫檢索數據
這是我的代碼
ScoreDetailActivity.java
public class ScoreDetailActivity extends Activity {
protected TextView userName;
protected TextView score;
protected int user_Id;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scoredetail);
user_Id = getIntent().getIntExtra("USER_ID", 0);
SQLiteDatabase db = (new DatabaseUsername(this)).getWritableDatabase();
Cursor cursor = db.rawQuery("SELECT alm._id, alm.nama, alm.jekel, sc._id, sc.score, sc.userId FROM almag alm LEFT OUTER JOIN score sc ON alm._id = sc.userId WHERE alm._id = ?",
new String[]{""+user_Id});
if (cursor.getCount() == 1)
{
cursor.moveToFirst();
userName = (TextView) findViewById(R.id.userName);
userName.setText(cursor.getString(cursor.getColumnIndex("nama")));
score = (TextView) findViewById(R.id.score);
score.setText(cursor.getString(cursor.getColumnIndex("score")));
}
}}
scoredetail.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/userName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/score"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
我希望有人可以提供幫助。謝謝
謝謝@fedepaol。你有任何教程,你推薦這可能是我的佈局參考? – kumisku
只是尋找listview/listactivity和simplecursoradapter。如果你不需要複雜的元素佈局,它應該是綽綽有餘。 – fedepaol